Henry h



(No Model.)

H. H. HOLDEN-.

- POWER MOTOR;

Patented June 5 I No. 278,962.

UNITED STATES PATENT OFFICE.

HENRY H. HOLDEN, or STRATHROY, ONTARIO, CANADA, SSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO WILLIAM COOPER AND ROBERT STONEHOUSE, BOTH or SAME PLACE.

POWER- MOTO R.

SPECIFICATION forming part of Letters Patent No. 278,962, dated June 5, 1883.

Application filed April 18, 1883. (No model.) Patented in Canada May 25, 1882, No. 14,841.

which the following is a specification, reference being had to the accompanying drawings.

This "invention relates to power-motors for driving scroll-saws, small lathes, and such other machinery requiring considerable power and a quick movement. Its object is to provide safe, durable, and efficient means for forming a. foot-power, all of which will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 rep resents a perspective view of my improved power-motor or footpower applied to a scrollsaw. Fig. 2 represents a sideview of the same. Fig. 3 represents a longitudinal vertical view of the same; and Fig. 4 represents a detail sectional view through the pulleyshaft.

Like letters refer to corresponding parts in all the figures.

Referring to the drawings, A designates the frame of a scroll-saw, having the usual table, B, slottedbracket O, and vibrating saw-frame D, composed of an upper-and lower part 0011- nected by a screw-threaded bolt, (1. These parts are constructed in any suitable manner and arranged according to any of the wellknown means heretofore used in scroll-sawing machines.

At the front end of the machine the treadles E are pivoted at the top to brackets or plates (2, secured to the under side of the table B. Suitable plates, e, are attached at the lower ends of the treadles and extend a little below the same, and foot-pieces F are pivoted in said plates, so as to fold up against the face of the treadles when the machine is not in use. As seen the said treadles move freely forward and backward, and are provided with rods or pitmen'G, connecting said treadles with the crankarms h, arranged on opposite ends of shaft H and extending in opposite directions. This shaft H is mounted in the frame of the machine in any suitable manner, and carries the main driving-wheel l, which is provided with a belt,

J, connecting said wheel to a revolving spool or pulley, K, mounted in a bracket, it, attached to the front end of the machine. The shaft k of this pulley is extended on one side to carry the wheel L, smaller in diameter thanthe main wheel. Said wheel L is provided on one side with a crank-pin, Z, and a connecting rod or link, M, connects the same with the lower arm or lever of the vibrating saw-frame. By applying power to the treadles they operate the pitmen G, which communicate motion to the driving-wheel I. The pulley K is thus operated by means of the belt-connection with the driving-wheel, and the shaft of said pulley imparts motion to the wheel L, which communicates a reciprocating motion, by means of the link-connection M, to the lower arm of the vibrating saw-frame.

A belt-groove may be 'providedin the pe riphery of the wheels and pulley, and by varying the diameters of said wheels and pulley agreater or less rapidity of movement of the operating parts ofthe machine will be obtained,

upon the foot-pieces of the treadles and bears or pushes one of them away from him to commence its revolution, and then, by alternately bearing and drawing upon the treadles he is enabled to keep up a continuous movement, which, as before stated, is communicated to the apparatus to be driven. Only onetreadle may be used, as found desirable, and when such a construction is employed the apparatus should be modified to conform thereto. Any other power may be substituted for the treadles to drive the pitmen Gfor instance, power from an enginewithout departing from. my invention. I

My foot-power or power-motor is very simple in its construction and efficient in its op eration. Vhen operated as above described it forms a much easier and more natural motion for the feet of the operator than the foot-powers heretofore in use, since by my arrangement a natural swing backward and forward is ob tained. Thus great power can be obtained by the expenditure of a comparati vely slight force applied to the treadles.

It is obvious that numerous modifications and arrangements of the foregoing may be made without departing from the spirit or scope of my invention.

It is also obvious-that my improved powermotor can be applied to sewing-machines, turning-lathes, and like machinery, and, indeed, with slight modifications, can be adapted to be used as a power-motor for other machines than those operated by foot-power.

Having thus described my invention, what I claim is '1. In a power-motor, the combination of the driving-wheel connecting with a pulley, said parts being mounted at each end of a suitable frame, and the pull eyshatt k, carrying a smaller wheel connecting with the machinery to be driven, a treadle for operating said parts, and a pitman connecting the treadle and drivingwheel, as set forth.

2. In a power-motor, the combination of the driving-wheel connecting with a smaller wheel, said parts being mounted at each end'of a suit able frame, a link for connecting the said smaller wheel with the machine to be driven, pitmen attached at one end to cranks on the ends of shaft H, and mechanism for operating said pitmen, as set forth.

3. In a power-motor, the combination of the th-iving-wheel I, carriedby the shaft H, a belt connecting said wheel with a pulley, K, on 

